Muma (1951) divided his newly erected genus Therobates Muma 1951 (now
recognized as a synonym of Eremochelis Roewer
1934) into
three species groups. One, the
branchi group was characterized a follows:

"Moderate-
to small-sized species. Males with mesal groove of fixed finger a deep
narrow slot containing no distinct carinae. Apical plumose bristles of
flagellum complex enlarged and flattened, covering part of the apical
portion of mesal groove. Ventral tubular bristles of complex grouped in
fondal notch. Known females have the opercula scalloped or lobate on
their ectal margins, adjacent on their mesal margins except for a small
triangular area near their posterior ends and elevated at the
postero-mesal angles. Ectal row of fondal teeth graded in size I, III,
II, IV; mesal row I, I, III, IV. In addition to the usual clothing the
metatarsi of the palpi are provided below with two unequal rows of stout
spines."